View Full Version : what compresin ratio
Grant Casey
09-24-2006, 03:45 AM
im thinking of get a 440 kit cam and all that stuff.
Wat compresin piston is the best. and wat do u run
cheers
krt400ex
09-24-2006, 08:44 AM
11:1 is prolly the best unless ur looking to run race fuel. then u could go as high as u want
make sure u get heavey duty studs
smitht316
09-24-2006, 10:10 AM
i would go 11:1 and no higher. those engines are just not built to be that fast. if you want faster then buying a new quad is the way to go.. i built my 400 up and now wish i would have just sold it and bought the 450r. i have had no problems with my 426 11:1 yet but i still get worried everytime i go out about blowing a head gasket
400eXr1d3rZ
09-24-2006, 10:13 AM
Originally posted by krt400ex
11:1 is prolly the best unless ur looking to run race fuel. then u could go as high as u want
make sure u get heavey duty studs
You don't need HD studs.
krt400ex
09-24-2006, 10:56 AM
Originally posted by 400eXr1d3rZ
You don't need HD studs.
with the 440s u do. they blow head gaskets all the time
Powered by vBulletin® Version 4.2.1 Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.